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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Third, variables such as education, race, age, and sex may affect test results, when comparing results either between groups or to established norms. 18 Fourth, the research design is challenging.
http://www.w3.org/ns/prov#wasQuotedFrom	lww.com